CVE-2026-41585: ZEBRA: Denial of Service via Interrupted JSON-RPC Requests from Authenticated Clients
ZEBRA is a Zcash node written entirely in Rust. From zebrad versions 2.2.0 to before 4.3.1 and from zebra-rpc versions 1.0.0-beta.45 to before 6.0.2, a vulnerability in Zebra's JSON-RPC HTTP middleware allows an authenticated RPC client to cause a Zebra node to crash by disconnecting before the request body is fully received. The node treats the failure to read the HTTP request body as an unrecoverable error and aborts the process instead of returning an error response. This issue has been patched in zebrad version 4.3.1 and zebra-rpc version 6.0.2.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41585?
CVE-2026-41585 is classified as a Denial of Service (DoS) vulnerability.
How do I fix CVE-2026-41585?
To resolve CVE-2026-41585, upgrade ZEBRA to version 4.3.1 or above, and zebra-rpc to version 6.0.2 or above.
Who is affected by CVE-2026-41585?
Authenticated clients using ZEBRA versions from 2.2.0 to before 4.3.1 and zebra-rpc versions from 1.0.0-beta.45 to before 6.0.2 are affected.
What causes CVE-2026-41585?
CVE-2026-41585 is caused by a vulnerability in Zebra's JSON-RPC HTTP middleware that allows interrupted requests.
What should I do if I can't upgrade to fix CVE-2026-41585?
If unable to upgrade, implement network security measures to limit access to the affected services as a temporary mitigation for CVE-2026-41585.